Door-opening mechanism



June 8 1926. 1,587,906

v. GARRISQN DOOR OPENING MECHANI SM Filed Feb. 20, 1924 2 Sheets-Sheet 1Ewan/l0)? I W W' June 3 1926. 1,587,906

' v. GARRISON DOOR OPENING MECHANISM Filed Feb. 20. 1924 2 Sheets-Sheet2 fit) Patented June 8, 192%.

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VERNA GARBISON, F NORTON, KANSAS.

DOORr F-EN G Application filed February 20, 1924-. Serial No. 694,130.

This invention relates to vehicle operat ing mechanism for openingdoors, gates and the like.

The object of the invention is to provide simple and efiicient dooropening mechanism .o-pcua'hlc from either side of the closure by theweight of the vehicle as 1t approaches tle closure, the door closingautomatically i or the vehicle. passes a predetermined point. I

This ini'ention is pri. iarily intended for use in connect-ion withgarage doors b t 11m). he used equally w l .on gates.

*ith the foregoing and other objects in view which will appear the fljSfil'lp'tlO'fl proceeds, the inrention resides in the coinh inn-tionand arrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes "in the preciseembodiment of the invention herein disclosed, may he made within thescope of what- .is claimedwithout departing from the spirit of theinvention.

In the accompanying drawings Ll ligure 1 represents a front elevation ofa garage equipped with this improved mechanism the .door being shown inclosed position.

Fig. 2 is a horizontal section taken on the line of Fig. 1.

Fig. 3 is a vertical section taken on the line 33 of Fig. 2.

Fig. 4: is a transverse section through a building equipped with theinvention applied to sliding or rolling doors the doors shown in closedposition; and

Fig. 5 is a view similar to Fig. 3 showing the rolling doors.

In the embodiment illustrated in Figs. 1 to 3 outwardly swinging hingeddoors 1. and 2 are shown for closing a garage 3 and which are equippedwith coiled springs 4;

and 5 connecting; the inner faces of the upper ends of the doors withthe door jamhs as shown at 6. These springs exert their tension to closethe doors as shown in the drawings.

The opening mechanism comprises two longitudinally extending boards 7and 8 arranged to extend through the opening in which the doors 1 and 2are located and which project some distance into the garage and somedistance outside thereof so that vehicles approaching the garage will.pass over one end of the boards and over the other ends after enteringthe garage.

'll'hese boards are spaced laterally apart a distance corresponding tothe distance hetween the wheels on opposite sides of the vehicle so asto insure the vehicle wheels pessin over the hoards.

A crank shaft 10 arranged transversely of the truck formed by the hoards7 and 8 inside the garage a point spaced from the opening designed to heclosed by the doors 1 and This shaft is mounted for roc ting; movementin suitable hearings the crank portions 11 and 12 of the shaft beinglocated under plates 9 carried by the inner ends of hoards 7 end 8 seidplates having; a loose commotion with the cranks 11 and 12 so that whenthe shaft 10 is turned in one direction the inner ends of the hoardswill he inised and when turned in the other direction these ends will helowered. The free ends of these plates 9 are preferahly inclineddownwardly to facilitate the pa.-

of the vehicle wheels onto the boards when coming out of the The shaft10 is provided at its opposite ends with upstandino; rigght angular arms13 here shown equipped at their free ends with- ,cyes 14: with which are.en aged similar eyes iedhy rods 15. illhese rods 15 areshown extendedthrough openings 8 in the front well of the garage adjacent the hingedupper ends of the doors. Rods 16 are located transversely across theupper ends of the doors 1. and 2 being connected with the doors neartheir free edges as shown at 17. The rear ends of these rods extendacross the hinged ends of the doors and have a loose connection with thelinks 15 so that when the crank portions 11 and 12 of the shaft 10 aremoved downwardly by pressure exerted on the plates 9 or on the outerends of the track bars 7 and 8 the shaft will he rocked and a pulltransmitted through the links 15 to the rods 16 causing; the doors 1 and2 to swing outwardly against the tension of the springs l and 5. Thedoors will remain in this position as long as the crank shaft isdepressed and when pressure is removed therefrom the springs 4; and 5will operate to close the doors 1 and 2 and to return the crank shaft toits normal position raising the track boards 7 and 8 ready for the nextvehicle.

In the use of this mechanism the parts being in the position shown inFigs. 1 to 3 a vehicle approaching the garage and passing up onto theboards 7 and 8 will depress the boards sufficiently to rock shaft 10 andlower the crank portions 11 and 12 exerting sufficient pull on the rods15 and 16 to open the doors 1 and 2 against the tension of the springs 1and After the vehicle enters the garage over tracks 7 and 8 and passesoff the inner ends of said tracks the doors 1 and 2 will automaticallyclose under springs l and 5.

hen the vehicle is to be taken out of the garage the driver will steerit on to the plates 9 and the weight of the Vehicle will depress thebars 7 and 8 and rock the crank shaft 10 a sufficient distance to openthe doors 1 and 2 permitting the Vehicle to pass out of the garage thedoors being held open until the vehicle passes otl' bars 7 and 8.

It is of course understood that the doors 1 and 2 may be opened by handand held in open position by props or any suitable means.

In the form shown in Figs. 4- and 5 the doors 1 and 2 are mounted onrollers 18 to travel on a track 19 located inside the building which isequipped with the doors 1 and 2. These doors are held normally closed bya coiled spring 20 secured at its opposite ends to the respective doorsspanning the front edges thereof as shown in Fig. 4c.

The operating mechanism for these doors is the sameas that shown in theother figures except that the links 15 and rods 16 are dispensed withand cables 21 used to replace them. These cables 21 are connected withthe upper ends of the shaft arms 13 and pass over pulleys 22 located onthe inner wall of the building and are attached to the upper frontcorners of the doors 1 and 2 so that when the crank shaft 10 is rocked apull will be transmitted-through arms 13 and the cables 21 to the doors1 and 2, said pull being sufiicient to overcome the tension of spring20.

The same crank shaft 10 is used in connection with either the hinged orthe sliding doors.

This door opening mechanism obviously may he used for opening farm gatesequally as well as thedoors of buildings and avoids the necessity of thedriver gettingout to open gates, garage doors and the like.

I claim A closure operator for buildings including boards defining atrack and having their inner ends supported within the building, theground surface under the boards being cut away throughout substantiallythe entire lengths of the boards, a crank shaft supported within thebuilding, said boards having their inner ends resting on the cranks ofthe crank shaft, said crank shaft having upwardly extended end portionsdisposed at right angles to the cranks, rods connected withthe upwardlyextended end portions, said rods being inclined and having their outerends arranged adjacent to the upper ends of closures for the building,rods connected with the first mentioned rods, and xtending across theupper portions of the closures and connected with the closures at pointsadjacent to the free edges of the closures, and said rods adapted toexert a pull on the closures when the boards are depressed under theweight of a Vehicle.

In testimony that I claim the foregoing as my own, I have hereto affixedmy signature.

VERNA GARRISON.

